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Simple Heating System Size: War gton State III <br /> • Sta <br /> This heating system sizing calculator is basal Ult the Prescriptive Requirements of the 2012 Washington te Energy Code(WSEC)and ACCA Manuals <br /> J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling loads. <br /> The glazing (window)and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of 0.30. <br /> The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2012 WSEC. <br /> -Please fill out all of the green drop-downs and boxes that are applicable to your project.As you make selections in the drop-downs for each section,some <br /> 'values will be calculated for you.If you do not see the selection you need in the drop-down options,please call the WSU Energy Extension Program at <br /> (360)956-2042 for assistance. <br /> Project Information Contact Information <br /> Plan 1775 <br /> Heating System Type: O All Other Systems 0 Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> Instructions -. .- - - Design Temperature Difference(AT) 49 <br /> Everett Paine AFB "o .6,7-=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 1,775 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.5 15,088 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions <br /> 0.30 285 85.50 <br /> Skylights U-Factor X Area = UA <br /> Instructions 0.50 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions _R-49 0.026111 . 0.026 770 20.02 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Instructions R-38 Vented 0.027 <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions -- 0.056 2,000 112.00 <br /> R-21Intermealate ✓^ <br /> ...ilfl li. ,,.:AlWe,: <br /> Floors U-Factor X Area UA <br /> Instructions 0.029 495 14.36 <br /> "IL <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> instructions No Below Grade Walls in this project 500 <br /> Slab Below Grade(see Figure t) F-Factor XLe� UA <br /> Instructions _ <br /> No selection <br /> Select conditioning <br /> Slab on Grade(see Figure-11 F-Factor X Len•th UA <br /> Instructions 0.540 116 62.64 <br /> R-10 Penmeter <br /> Location of Ducts <br /> Instructions Duct Leakage Coefficient <br /> •No Ducts <br /> 1.00 <br /> Sum of UA 294.52 <br /> Envelope Heat Load 14,431 Btu/Hour <br /> Figure 1. Sum of UAXAT <br /> Air Leakage Heat Load 7,984 Btu/Hour <br /> VolumeX 0.6 XAT X.018 <br /> Above Grade Building Design Heat Load 22,416 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> Building and Duct Heat Load 22,416 Btu 1 Hour <br /> Ducts in unconditioned space:Sum of Building Heat Loss X1.10 <br /> Ducts in conditioned space:Sum of Building Heat Loss X 1 <br /> Maximum Heat Equipment Output 31,382 Btu/Hour e"--.7 <br /> Building and Duct Heat Loss X 1.40 for Forced Air Furnace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump <br /> (07/01/13) <br />